Losing your mother in a dream may mean that you feel that your mother's relationship or companionship is lacking or unstable in real life, and you are worried or confused about losing your mother. This may be related to your lack of communication with your mother, your lack of attention, or your loss of contact with her.
The meaning of dreams is personal, so you can think for yourself whether there is tension or other problems with your mother in your personal life, and whether you are looking for a better way to establish a more stable and intimate connection with her.
In short, dreaming that your mother is lost may remind you of your relationship with your mother and try to solve or improve possible problems.